Eight pin and up rims with 3/8 is almost always ported saw, way over-barring, or race setup. I did an eight on an ms460 with a 20" once firewooding. It was cute but not practical unless your chain is on point, and then you're constantly touching it up. Throwing more bar or rim at a stock saw reminds me of putting a fart can on a four cylinder car. If you want to have more fun in the woods I would look at learning how to file a nice chain, modding the pathetic opening in the 362 muffler, or advancing the timing.